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Understanding and Avoiding Common Concrete Flatwork Problems: Back to Basics
Although concrete has been used in one form or another for thousands of years there seems to be recurring problems that still exist into the 21st Century. Concrete is a very complex material, however many of the problems encountered in construction are rather basic. To avoid these problems all the parties involved in the concrete construction process must have an understanding of the mechanisms responsible for these problems as well as the simple means to avoid them.
This presentation will focus on two of the more common recurring problems in the concrete industry related to flatwork: Cracking and Scaling. We will explore the fundamentals of concrete related to these problems to address “how and why” they occur as well as the measure to take to prevent them. Some of the subject matter to be covered will include:
Cracking: concrete shrinkage, thermal effects, restraint, joints & joint spacing, reinforcement
Scaling: freezing & thawing, critical saturation, concrete quality, finishing, updated codes/standards for concrete quality

Robert E. Neal, Lehigh Cement Company

Robert (Bob) E. Neal graduated from Georgia Southern College in 1976 with a degree in civil engineering. After college, he joined the Lehigh Cement Company as a Technical Services Engineer and continues to serve in that capacity today. Bob has over 44 years of experience in the field of concrete technology with emphasis on durability related issues, product development, and trouble shooting various concrete problems.
A Fellow of the American Concrete Institute, Bob is an active member of ACI currently serving on committees 201 – Durability, 232 - Fly Ash, and is the past chairman of 240 - Pozzolans.
Throughout his career he has been closely involved with the technical activities various local and state concrete associations particularly the VRMCA Technical Committee.
Bob resides in Richmond VA, married to Linda and has two sons, Bobby and Daniel.

Apr 14, 2021 12:00 PM in Eastern Time (US and Canada)

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